A Modified Range Model and Extended Omega-K Algorithm for High-Speed-High-Squint SAR With Curved Trajectory

T Zhang, Y Li, J Wang, M Xing, L Guo… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
An accurate range model with acceleration, the coupling phase terms, and spatial-variant
(SV) Doppler parameters are the main issues to be solved in high-speed-high-squint …

Wide-beam SAR autofocus based on blind resampling

J Chen, H Yu - Science China Information Sciences, 2023 - Springer
Long synthetic aperture time and large instantaneous beam can turn airborne synthetic
aperture radar (SAR) autofocus into a wide-beam autofocus problem; ie, the motion error is …

An Estimation and Compensation Method for Motion Trajectory Error in Bistatic SAR

Y Li, W Li, J Wu, Z Sun, H Sun, J Yang - Remote Sensing, 2022 - mdpi.com
Bistatic synthetic aperture radar (BiSAR) has drawn increasing attention in recent studies
benefiting from its ability for forward-looking imaging, its capability of receiver radio silence …

A Novel Motion Compensation Method Applicable to Ground Cartesian Back-Projection Algorithm for Airborne Circular SAR

Y Lou, W Liu, M Xing, H Lin, X Chen… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
The Ground-Cartesian factorized back-projection (G-CFBP) is an efficient time-domain
processing algorithm without image interpolation, and can realize accurate imaging for …

Focusing Highly-Squinted FMCW SAR Data Using the Modified Wavenumber-Domain Algorithm

T Zhang, Y Li, M Yuan, L Guo, H Lin… - IEEE Journal of …, 2023 - ieeexplore.ieee.org
Three-dimension acceleration, azimuth dependence, and real-time processing are the main
issues to be solved in highly-squinted frequency-modulation continuous-wave (FMCW) SAR …

Processing of Airborne Microwave Photonic SAR Raw Data with Inaccurate RSF

J Chen, M Li, M Xing, G Xu, Y Zhu… - IEEE Journal on …, 2023 - ieeexplore.ieee.org
Due to system instability and other reasons, the actual range sampling frequency of the
system may deviate from the ideal value for the microwave photonic synthetic aperture radar …

Coherent range-dependent map-drift algorithm for improving SAR motion compensation

M Zhang, G Wang, F Wei, X Jin - Journal of Systems …, 2023 - ieeexplore.ieee.org
Synthetic aperture radar (SAR) is usually sensitive to trajectory deviations that cause serious
motion error in the recorded data. In this paper, a coherent range-dependent map-drift …

A high frequency vibration compensation approach for ultrahigh resolution SAR imaging based on sinusoidal frequency modulation Fourier-Bessel transform

C Siyu, W Yong, C Rui - Journal of Systems Engineering and …, 2023 - ieeexplore.ieee.org
Ultrahigh resolution synthetic aperture radar (SAR) imaging for ship targets is significant in
SAR imaging, but it suffers from high frequency vibration of the platform, which will induce …